TPG Telecom's full-year profit has slumped 56.1 per cent to $173.8 million after the internet provider copped a $196.1 million hit from scrapping its planned mobile network.

TPG Telecom's full-year profit has slumped 56.1 per cent to $173.8 million after the internet provider copped a $196.1 million hit from scrapping its planned mobile network.